They don't - rockets need air to push against, which is why they do not work
in a vaccum.
Ergo, we have never successfully launched anything into a very high orbit
yet - we just can't get the rockets fast enough before they run out of air
to push against.

Uhm, I'm sorry, I *must* ask - are you a "Flat Earth"-er?

Or something similar? You see, we didn't have Kozmo the Mysterious levitate
the Lunar Lnaders off the moon in 69, 70, 71, & 72. They used - GASP!- rocket
motors.

And there is no air on the moon, in it's orbit, etc. Rockets were used,
again, to break the moon's gravity and return the astronauts from it.

Newton's Third Law (I think it's the third) - every action will have an equal
and opposite reaction. That is how rockets work. Air needs not apply.


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